While using any web application, when user creates a new account, post a comment on some website or buy something, came across different type of captcha like this: What is reCaptcha ? CAPTCHA stands for the Completely Automated Public Turing test to tell Computers and Humans Apart. reCAPTCHA is a free service that protects…

In this post we will learn about the global environment & the global execution context. Whenever any code runs in a JS, it runs inside an execution context. It’s an abstract concept, a wrapper where the JS code is executed and evaluated. When we are looking at the JS program…

Hello all! In this article we are talking about objects in JavaScript. To understand JavaScript, we need to understand what are the objects in JavaScript. Objects In Real Life Just like any other programming languages, we can compare objects in real life. Let’s take an example of a car. There are different properties of…

Hello all, I hope you read the first article of JS Essentials i.e. Syntax Parser. Now let’s proceed further and talk about our next under the hood concept which is ‘Lexical Environment’. Let’s first understand what is the meaning of the word ‘lexical’ ? Lexical is nothing but related to…

Hello everyone and welcome to the JS Essentials. This is the platform where we are learning different JavaScript concepts. It is important to know how JS works under the hood to get a better understanding before writing any business logic. I have started this series because I just did a…

Angular provides lots of features, and one of the most important feature is component reusability. To reuse the components we can use content projection or ng-content. Let’s understand how we can use <ng-content> to reuse the component and project the contents dynamically. Let’s take a simple example. …

Hello everyone! In this article I will be talking about RxJS as I have just completed a course from Pluralsight on RxJS in Angular: Reactive Development by the author Deborah Kurata. Thanks to her as she has explained the terms very well. This post includes some of the learning from…

Progressive Web Apps (PWAs) leverage Google methodology to deliver an extremely engaging mobile experience through web. Progressive web application is a new software development methodology which combines features offered by most modern browsers with the benefits of mobile experience. To get more details on PWA you can refer this. In…

Progressive Web Apps (PWA) now widely accepted by industry. There are many PWAs in production. Here are some examples of PWAs. Progressive web application is a new software development methodology which combines features offered by most modern browsers with the benefits of mobile experience. As a part of this post…